Game Feel in general is basically little details that you can add to your game to make it feel more alive. I'm really bad at explaining things, but i can recommend you some videos that really helped me out with this stuff.
Secrets of Game Feel and Juice: (11) Secrets of Game Feel and Juice - YouTube
The art of Screen Shake: (11) Jan Willem Nijman - Vlambeer - "The art of screenshake" at INDIGO Classes 2013 - YouTube
Great that you're willing to receive feedback! That's something that many people lack. Good luck with game dev!